The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6620-00-902-5090
NSN 5985-01-437-8863
NSN 5930-01-034-2035
NSN 6135-01-591-1250
NSN 6105-00-925-2226
NSN 5950-01-441-2143
NSN 5960-01-350-2925
NSN 7035-00-922-5700
NSN 5965-01-605-0090
NSN 5985-01-555-6721
NSN 5855-01-145-4903
NSN 5835-00-794-7500